Bad performance with XFS + 2.6.38 / 2.6.39

[Yann Dupont]

Le 22/12/2011 12:02, Yann Dupont a écrit :
> Le 22/12/2011 10:23, Yann Dupont a écrit :
>>
>>> Can you run a block trace on both kernels (for say five minutes)
>>> when the load differential is showing up and provide that to us so
>>> we can see how the IO patterns are differing?
>
>
> here we go.
>

Hello, happy new year everybody ,

Did someone had time to examine the 2 blktrace ? (and, by chance, can 
see the root cause of the increased load ?)

One of my server is still running 3.1.6. In the coming days I'll see a 
very important load increase (today is still calm). Is there anything I 
can do to go further  ?

Thanks,




-- 
Yann Dupont - Service IRTS, DSI Université de Nantes
Tel : 02.53.48.49.20 - Mail/Jabber : Yann.Dupont at univ-nantes.fr